The TPS51216-EP provides a complete power supply for DDR2, DDR3 and DDR3L memory systems
in the lowest total cost and minimum space. It integrates a synchronous buck regulator controller
(VDDQ) with a 2-A sink/source tracking LDO (VTT) and buffered low noise reference (VTTREF). The
TPS51216-EP employs D-CAP mode coupled with 300
kHz/400 kHz frequencies for ease-of-use and fast transient response. The VTTREF tracks VDDQ/2
within excellent 0.8% accuracy. The VTT, which provides 2-A sink/source peak current capabilities,
requires only 10-µF of ceramic capacitance. In addition, a dedicated LDO supply input is
The TPS51216-EP provides rich useful functions as well as excellent power supply
performance. It supports flexible power state control, placing VTT at high-Z in S3 and discharging
VDDQ, VTT, and VTTREF (soft-off) in S4/S5 state.
Programmable OCL with low-side MOSFET RDS(on) sensing,
OVP/UVP/UVLO and thermal shutdown protections are also available.
The TPS51216-EP is available in a 20-pin, 3 mm × 3 mm, WQFN package and is specified for
junction temperature from -55°C to 125°C.
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